80076

Hepatic Function Panel

The Hepatic Function Panel, designated by CPT code 80076, is a comprehensive laboratory blood test used to evaluate the functional status and integrity of the liver. This panel is essential for diagnosing liver disease, monitoring the progression of known hepatic conditions, and assessing the potential hepatotoxicity of certain medications. The liver serves as the primary site for metabolism, detoxification, and the synthesis of vital proteins; therefore, biochemical markers in the blood can provide critical insights into its health. This panel specifically measures seven distinct analytes: Albumin (82040), Total Bilirubin (82247), Direct Bilirubin (82248), Alkaline Phosphatase (84075), Total Protein (84155), Alanine Aminotransferase (ALT/SGPT) (84460), and Aspartate Aminotransferase (AST/SGOT) (84450). The enzymes AST and ALT are indicators of hepatocellular injury or inflammation, as they leak into the bloodstream when liver cells are damaged. Alkaline Phosphatase and Bilirubin (Total and Direct) provide information regarding the excretory function of the liver and the patency of the biliary tract, helping to distinguish between intrahepatic and extrahepatic cholestasis. Albumin and Total Protein levels are markers of the liver's synthetic capacity, as the liver is responsible for producing these proteins. Low levels may indicate chronic liver disease or malnutrition. By evaluating these components collectively, clinicians can identify patterns suggestive of specific pathologies such as viral hepatitis, alcoholic liver disease, non-alcoholic fatty liver disease (NAFLD), or biliary obstruction. The results are typically interpreted in the context of the patient's clinical history, physical examination, and other diagnostic findings.

Clinical Indications

  • Evaluation of symptoms suggestive of liver disease, such as jaundice, dark urine, or light-colored stools.
  • Monitoring of patients with known chronic liver conditions, including cirrhosis, chronic hepatitis B or C, and autoimmune hepatitis.
  • Screening for liver damage in patients with high alcohol consumption or exposure to hepatotoxic substances.
  • Assessment of patients complaining of persistent abdominal pain, swelling (ascites), or unexplained fatigue.
  • Baseline and periodic monitoring for patients prescribed medications known to affect liver function, such as statins, methotrexate, or anti-seizure drugs.
  • Evaluation of suspected biliary tract obstruction or gallbladder disease.
  • Routine health screening for individuals at high risk for liver disease due to obesity or type 2 diabetes.

Procedure Steps

  1. Verify the patient's identity using two institutional identifiers.
  2. Perform a standard venipuncture to collect a venous blood sample, typically into a gold-top (serum separator) or red-top tube.
  3. Label the specimen tube immediately after collection with patient details, date, and time.
  4. Allow the blood to clot for the required period if using a serum separator tube.
  5. Centrifuge the specimen to separate the serum from the cellular components.
  6. Transfer the serum to an automated laboratory analyzer for the measurement of the seven specific analytes.
  7. Quantify Albumin, Total Protein, AST, ALT, Alkaline Phosphatase, Total Bilirubin, and Direct Bilirubin using spectrophotometric or enzymatic assays.
  8. Validate the laboratory results against reference ranges and quality control standards.
  9. Report the findings to the ordering physician for clinical interpretation.

Coding Guidelines

  • All seven tests listed in the CPT definition must be performed to report code 80076.
  • If any of the component tests are missing, the panel code 80076 cannot be used; individual component codes must be reported instead.
  • Do not report individual component codes (82040, 82247, 82248, 84075, 84155, 84460, 84450) in addition to 80076 for the same patient encounter.
  • If a Comprehensive Metabolic Panel (80053) is performed on the same day, code 80076 is generally not reported separately as 80053 includes most components, except for Direct Bilirubin.
  • Only one hepatic function panel should be reported per 24-hour period unless a change in clinical status justifies repeat testing.
  • Append modifier -91 (Repeat clinical diagnostic laboratory test) if the same panel is medically necessary twice on the same day.

Associated ICD-10 Codes